Shaft lifting device for multiple shaft diameters

Abstract

The utility model discloses a shaft lifting device for multiple shaft diameters, which relates to the technical field of maintenance and overhaul of rotating equipment and comprises a supporting cross beam, a steel wire rope, a first fixing piece, a second fixing piece, a first supporting rod, a first driving piece, a second supporting rod and a second driving piece. The working length of the steel wire rope can be adjusted to be matched with the shaft diameter of the shaft, and the first end of the steel wire rope and the supporting cross beam are fixed through the first fixing piece; the second end of the steel wire rope and the supporting cross beam are fixed through the second fixing piece. The first driving piece drives the supporting cross beam to slide in the length direction of the first supporting rod and can keep the position after sliding; the second driving piece drives the supporting cross beam to slide in the length direction of the second supporting rod and can keep the position after sliding, the structure is simple, use is convenient, and the difficulty of overhaul work is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of maintenance and overhaul of rotating equipment, in particular to a shaft lifter for multiple shaft diameters. Background Technique

[0002] During the maintenance and overhaul of rotating equipment, it is often necessary to inspect the bearing bushes at various parts without removing the rotor. Especially for the inspection of the lower bearing bush of the unit, the shaft of the whole unit needs to be slightly lifted for a long time to disengage it from the lower bearing bush, and then the lower bearing bush can be turned out for detailed inspection and reinstalled after the inspection. If a hoisting machine is selected to perform this operation, it is easy to damage the rotor due to excessive displacement because the force is difficult to accurately control. Therefore, a special shaft lifter is required in this case.

[0003] However, in the actual use of the shaft lifter, we found some problems. The shaft lifter is often only suitable for specific machines and has low interchangeability. The crossbeam length, the distance between the support feet, and the shaft diameter that can be lifted of the shaft lifter randomly provided by the manufacturer are fixed. This limits the use of the shaft lifter on other units. Moreover, since the shaft diameters on a unit may be different, sometimes even two or more shaft lifters are required, which brings trouble to our actual use, is easy to be confused, and once a component is lost, it must be remade separately, increasing the difficulty of the overhaul work, prolonging the overhaul period, and affecting the use of the unit.

[0004] Therefore, it is urgent to research a multi-purpose shaft lifter at present. Content of the Utility Model

[0005] The purpose of the utility model is to provide a shaft lifter for multiple shaft diameters to solve the problems existing in the above-mentioned prior art, with simple structure, convenient use, and effectively reducing the difficulty of the overhaul work.

[0006] To achieve the above purpose, the utility model provides the following scheme:

[0007] The present utility model provides a shaft lifter for multiple shaft diameters, comprising: a support cross beam, a steel wire rope, a first fixing member, a second fixing member, a first support rod, a first driving member, a second support rod and a second driving member. The first end and the second end of the steel wire rope are respectively movably connected to the support cross beam, and can adjust the working length of the steel wire rope to adapt to the shaft diameter of the shaft. The first fixing member is used for fixing the first end of the steel wire rope to the support cross beam; the second fixing member is used for fixing the second end of the steel wire rope to the support cross beam; the bottom of the first support rod is used for being placed on the ground, and the top of the first support rod is slidably connected to the support cross beam in the length direction of the first support rod; the first driving member is used for driving the support cross beam to slide in the length direction of the first support rod and can maintain the position after sliding; the bottom of the second support rod is used for being placed on the ground, and the top of the second support rod is slidably connected to the support cross beam in the length direction of the second support rod; the second driving member is used for driving the support cross beam to slide in the length direction of the second support rod and can maintain the position after sliding.

[0008] Preferably, first sliding holes and second sliding holes are respectively arranged at both ends of the support cross beam. The first driving member is a first adjusting nut, the first support rod is a first screw rod, the second driving member is a second adjusting nut, and the second support rod is a second screw rod. The top of the first screw rod passes through the first sliding hole, the first adjusting nut is threadedly connected to the first screw rod and is arranged below the first sliding hole. The diameter of the first adjusting nut is larger than the width of the first sliding hole. The top of the second screw rod passes through the second sliding hole, the second adjusting nut is threadedly connected to the second screw rod and is arranged below the second sliding hole. The diameter of the second adjusting nut is larger than the width of the second sliding hole.

[0009] Preferably, both the first sliding hole and the second sliding hole are long strip holes.

[0010] Preferably, it further comprises a first conical support foot and a second conical support foot. The first conical support foot is fixedly connected to the bottom of the first support rod, and the bottom of the first conical support foot is used for being placed on the ground. The second conical support foot is fixedly connected to the bottom of the second support rod, and the bottom of the second conical support foot is used for being placed on the ground.

[0011] Preferably, it further comprises a plurality of first rope passing holes and a plurality of second rope passing holes. Each of the first rope passing holes and each of the second rope passing holes vertically penetrate the support cross beam. Each of the first rope passing holes is used for the first end of the steel wire rope to pass through in a serpentine shape, and each of the second rope passing holes is used for the second end of the steel wire rope to pass through in a serpentine shape.

[0012] Preferably, it further includes a plurality of first threaded holes and a plurality of second threaded holes. The first fixing member includes a plurality of first fastening bolts. Each of the first threaded holes is arranged in one-to-one correspondence with each of the first rope-passing holes. The first threaded holes are horizontally arranged and communicate with the middle parts of the first rope-passing holes. The first fastening bolts are used for being threadedly connected with the first threaded holes and tightly pressing the steel wire ropes passing through the first rope-passing holes. The second fixing member includes a plurality of second fastening bolts. Each of the second threaded holes is arranged in one-to-one correspondence with each of the second rope-passing holes. The second threaded holes are horizontally arranged and communicate with the middle parts of the second rope-passing holes. The second fastening bolts are used for being threadedly connected with the second threaded holes and tightly pressing the steel wire ropes passing through the second rope-passing holes.

[0013] Preferably, it further includes a cotton cloth wrapping member for wrapping the position where the steel wire rope contacts the shaft.

[0014] The utility model has achieved the following technical effects compared with the prior art:

[0015] The utility model provides a shaft lifter for multiple shaft diameters. Steel wire ropes with appropriate diameters and lengths are selected according to the shaft diameters of the shafts to be lifted. The steel wire ropes are passed through the lower part of the shafts to be lifted. The first ends of the steel wire ropes are fixed to the support crossbeam through the first fixing member, and the second ends of the steel wire ropes are fixed to the support crossbeam through the second fixing member. Then, the first support rod and the second support rod are installed on both sides of the shaft to be lifted, and the first driving member and the second driving member are operated simultaneously to slowly move the support crossbeam upward to achieve shaft lifting. The structure is simple, it can be applicable to shafts to be lifted with different shaft diameters, is convenient to use, and effectively reduces the difficulty of maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of the shaft lifter for multiple shaft diameters provided by the present invention;

[0018] In the figure: 1. First support rod; 2. First adjusting nut; 3. First conical foot; 4. Steel wire rope; 5. First rope-passing hole; 6. Second fastening bolt; 7. Second threaded hole; 9. Second sliding hole; 10. Support crossbeam. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] The purpose of the present invention is to provide a shaft lifter for multiple shaft diameters to solve the problems existing in the above-mentioned prior art. It has a simple structure, is easy to use, and effectively reduces the difficulty of maintenance work.

[0021] To make the above-mentioned objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] The present invention provides a shaft lifter for multiple shaft diameters, as Figure 1 shown, including: a support crossbeam 10, a steel wire rope 4, a first fixing member, a second fixing member, a first support rod 1, a first driving member, a second support rod, and a second driving member. The first end and the second end of the steel wire rope 4 are respectively movably connected to the support crossbeam 10, and the working length of the steel wire rope 4 can be adjusted to adapt to the shaft diameter of the shaft. The first fixing member is used to fix the first end of the steel wire rope 4 to the support crossbeam 10; the second fixing member is used to fix the second end of the steel wire rope 4 to the support crossbeam 10; the bottom of the first support rod 1 is placed on the ground, and the top of the first support rod 1 is slidably connected to the support crossbeam 10 in the length direction of the first support rod; the first driving member is used to drive the support crossbeam 10 to slide in the length direction of the first support rod and can maintain the position after sliding; the bottom of the second support rod is placed on the ground, and the top of the second support rod 1 is slidably connected to the support crossbeam 10 in the length direction of the second support rod; the second driving member is used to drive the support crossbeam 10 to slide in the length direction of the second support rod and can maintain the position after sliding. According to the shaft diameter of the shaft to be lifted, a steel wire rope 4 with a suitable diameter and length will be selected, the steel wire rope 4 will be passed under the shaft to be lifted, and the first end of the steel wire rope 4 will be fixed to the support crossbeam 10 through the first fixing member, and the second end of the steel wire rope 4 will be fixed to the support crossbeam 10 through the second fixing member. Then, the first support rod 1 and the second support rod are installed on both sides of the shaft to be lifted, and the first driving member and the second driving member are operated simultaneously to slowly move the support crossbeam 10 upward to achieve shaft lifting. It has a simple structure, can be applied to shafts with different shaft diameters to be lifted, is easy to use, and effectively reduces the difficulty of maintenance work.

[0023] In a preferred embodiment, a first sliding hole and a second sliding hole 9 are respectively provided at both ends of the support cross beam 10. The first driving member is a first adjusting nut 2, the first support rod 1 is a first screw rod, the second driving member is a second adjusting nut, and the second support rod is a second screw rod. The top of the first screw rod passes through the first sliding hole, the first adjusting nut 2 is threadedly connected to the first screw rod and is arranged below the first sliding hole. The diameter of the first adjusting nut 2 is greater than the width of the first sliding hole. The top of the second screw rod passes through the second sliding hole 9, the second adjusting nut is threadedly connected to the second screw rod and is arranged below the second sliding hole 9. The diameter of the second adjusting nut is greater than the width of the second sliding hole 9. The structure is simple and the materials are convenient to obtain.

[0024] In a preferred embodiment, both the first sliding hole and the second sliding hole 9 are long strip holes. The structure is simple and convenient to use.

[0025] In a preferred embodiment, the multi-diameter shaft lifter further includes a first conical support foot 3 and a second conical support foot. The first conical support foot 3 is fixedly connected to the bottom of the first support rod 1, and the bottom of the first conical support foot 3 is used to be placed on the ground. The second conical support foot is fixedly connected to the bottom of the second support rod, and the bottom of the second conical support foot is used to be placed on the ground, effectively ensuring the stability of the first support rod 1 and the second support rod.

[0026] In a preferred embodiment, the multi-diameter shaft lifter further includes a plurality of first rope passing holes 5 and a plurality of second rope passing holes. Each first rope passing hole 5 and each second rope passing hole vertically penetrate through the support cross beam 10. Each first rope passing hole 5 is used for the first end of the steel wire rope 4 to pass through in a serpentine shape, and each second rope passing hole is used for the second end of the steel wire rope 4 to pass through in a serpentine shape. The structure is simple and effectively ensures the stability after the steel wire rope 4 is connected to the support cross beam 10.

[0027] In a preferred embodiment, the multi-diameter shaft lifter further includes a plurality of first threaded holes and a plurality of second threaded holes 7. The first fixing member includes a plurality of first fastening bolts. Each first threaded hole is arranged in one-to-one correspondence with each first rope passing hole 5, and the first threaded hole is horizontally arranged and communicated with the middle part of the first rope passing hole 5. The first fastening bolt is used to be threadedly connected to the first threaded hole and tightly press the steel wire rope 4 passing through the first rope passing hole 5; the second fixing member includes a plurality of second fastening bolts 6. Each second threaded hole 7 is arranged in one-to-one correspondence with each second rope passing hole, and the second threaded hole 7 is horizontally arranged and communicated with the middle part of the second rope passing hole. The second fastening bolt is used to be threadedly connected to the second threaded hole 7 and tightly press the steel wire rope 4 passing through the second rope passing hole. The structure is simple and convenient to use.

[0028] In a preferred embodiment, the multi-diameter shaft lifter further includes a first locking nut and a second locking nut. The first locking nut is used to be threadedly connected to the outside of the first fastening bolt, and the second locking nut is used to be threadedly connected to the outside of the second fastening bolt 6.

[0029] In a preferred embodiment, the multi-axis diameter shaft lifter further includes a cotton cloth wrapping member, which is used to wrap the position where the steel wire rope 4 contacts the shaft, effectively preventing the steel wire rope 4 from damaging the shaft.

[0030] In the present utility model, specific examples are used to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A shaft lifter for multiple shaft diameters, characterized in that: include: Support beams; A steel wire rope, wherein the first end and the second end of the steel wire rope are respectively movably connected to the supporting crossbeam, and the working length of the steel wire rope can be adjusted to adapt to the shaft diameter of the shaft to be lifted; a first fixing member, the first fixing member being used to fix the first end of the steel wire rope to the supporting crossbeam; a second fixing member, the second fixing member being used to fix the second end of the steel wire rope to the supporting beam; A first support rod, wherein the bottom of the first support rod is used to be placed on the ground, and the top of the first support rod is slidably connected to the supporting crossbeam in the length direction of the first support rod; a first driving member, the first driving member being used to drive the supporting crossbeam to slide in the length direction of the first supporting rod and capable of maintaining the position after sliding; A second support rod, wherein the bottom of the second support rod is used to be placed on the ground, and the top of the second support rod is slidably connected to the supporting crossbeam in the length direction of the second support rod; as well as A second driving member is used to drive the supporting crossbeam to slide in the length direction of the second supporting rod and to maintain the position after sliding.

2. The multi-diameter shaft lifter according to claim 1, characterized in that: The supporting crossbeam is provided with a first sliding hole and a second sliding hole at both ends, respectively, the first driving member is a first adjusting nut, the first supporting rod is a first screw, the second driving member is a second adjusting nut, the second supporting rod is a second screw, the top of the first screw passes through the first sliding hole, the first adjusting nut is threadedly connected to the first screw and is arranged below the first sliding hole, the diameter of the first adjusting nut is greater than the width of the first sliding hole, the top of the second screw passes through the second sliding hole, the second adjusting nut is threadedly connected to the second screw and is arranged below the second sliding hole, and the diameter of the second adjusting nut is greater than the width of the second sliding hole.

3. The multi-diameter shaft lifter according to claim 2, characterized in that: The first sliding hole and the second sliding hole are both elongated holes.

4. The multi-diameter shaft lifter according to claim 3, characterized in that: It also includes a first conical foot and a second conical foot, wherein the first conical foot is fixedly connected to the bottom of the first support rod, and the bottom of the first conical foot is used to be placed on the ground, and the second conical foot is fixedly connected to the bottom of the second support rod, and the bottom of the second conical foot is used to be placed on the ground.

5. The multi-diameter shaft lifter according to claim 1, characterized in that: It also includes a plurality of first rope threading holes and a plurality of second rope threading holes, each of the first rope threading holes and each of the second rope threading holes vertically passes through the supporting crossbeam, each of the first rope threading holes is used to allow the first end of the steel wire rope to pass through in a serpentine manner, and each of the second rope threading holes is used to allow the second end of the steel wire rope to pass through in a serpentine manner.

6. The multi-diameter shaft lifter according to claim 5, characterized in that: It also includes a plurality of first threaded holes and a plurality of second threaded holes, the first fixing member includes a plurality of first fastening bolts, each of the first threaded holes is arranged in a one-to-one correspondence with each of the first rope threading holes, and the first threaded holes are arranged horizontally and communicated with the middle of the first rope threading hole, and the first fastening bolt is used to be threadedly connected to the first threaded hole and tighten the steel wire rope passing through the first rope threading hole; the second fixing member includes a plurality of second fastening bolts, each of the second threaded holes is arranged in a one-to-one correspondence with each of the second rope threading holes, and the second threaded holes are arranged horizontally and communicated with the middle of the second rope threading hole, and the second fastening bolt is used to be threadedly connected to the second threaded hole and tighten the steel wire rope passing through the second rope threading hole.

7. The multi-diameter shaft lifter according to claim 6, characterized in that: It also includes a cotton cloth wrapping piece, which is used to wrap the position where the steel wire rope contacts the shaft to be lifted.

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